48
d)
Turning the VRD ON/OFF. (see Figure 14)
•
To turn VRD ON: rotate the trim potentiometer (VR1) on the display PCB fully clockwise.
When VRD is turned ON check that it operates as per VRD Specifications on page 46.
•
To turn VRD OFF: rotate the trim potentiometer (VR1) on the display PCB fully
counter-clockwise.
WARNING 10
The VRD ON/OFF trim potentiometer MUST ONLY be positioned fully clockwise OR fully counter
clockwise as the VRD function will be unknown for every other position.
Figure 14.
VRD ON/OFF Step D